It is a Benjamin Air rifle. Benjamin Franklin is just a quote printed on the side.Mgf 1968-92the age of your model 342 Benjamin air rifle can be found on crosman's website, but I have saved you the trouble:RIFLE Models: 340, 342, and 347YearStarting Serial NumberEnding Serial Number1968T1000T55291969T5530T613521970T61353T902631971T90264T1139661972T113967T1495341973T149535T1809391974T180940T2104991975T210450T2476511976T247652T2783991977T278400T2982411978T298242T3266991979T326700T3595681980T359569T3795001981T379501T4263051982T426305T430000 &UP
it was made in 1975
T427432 was made in 1982.
It would really help if you stated the model number. Also most older Benjamin serial numbers began with a "B" or "H" or "T".
It was made in 1969.
What condition is it in. That determines the value.
Serial numbers are usually on the left side of the barrel near the breech (loading port)
Most likely around late 1956 according to Crosman who owns Benjamin.
Unfortunately I can't tell you the age by the serial number. State the model number, that will help identify it's age.
It was made between 1968 to 1986. It is a .22 caliber rifle. If you want the owners manual for this rifle see the link below. Crosman owns and makes Benjamin and Sheridan rifles.
The first Benjamin model was the "St Louis model" made in 1899.
What is the value of a Model 62 Winchester .22 rifle with serial 21072